Results 1 to 10 of about 540 (136)

A Dynamic Smagorinsky Model for Horizontal Turbulence Parameterization in Tropical Cyclone Simulation

Geophysical Research Letters
The horizontal turbulence parameterization is vital for the intensity and structure forecasting of tropical cyclone (TC) in numerical weather prediction (NWP) models.
Xu Zhang, Qijun Huang, Yulong Ma
doaj   +2 more sources

Large eddy simulation of a turbulent channel flow using dynamic Smagorinsky subgrid scale model and differential equation wall model

International Journal of Thermofluids
A large eddy simulation (LES) is conducted in a plane channel flow which is turbulent. For understanding the mechanism of the turbulent motion more efficiently, the present study is an attempt to conduct the LES using a Dynamic Smagorinsky Model (DSM ...
Mohammad Azizul Hoque, Muhammad Saiful Islam Mallik, Muhammad Sajjad Hossain, Rathindra Chandra Gope, Md.Ashraf Uddin   +4 more
doaj   +3 more sources

Wind Pressure Distributions on Buildings Using the Coherent Structure Smagorinsky Model for LES

Computation, 2018
A subgrid-scale model based on coherent structures, called the Coherent Structure Smagorinsky Model (CSM), has been applied to a large eddy simulation to assess its performance in the prediction of wind pressure distributions on buildings.
Pham Van Phuc, Tsuyoshi Nozu, Hirotoshi Kikuchi, Kazuki Hibi, Yukio Tamura   +4 more
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Noise characteristic analysis and sound sources identification for rod–airfoil interaction using different subgrid-scale models [PDF]

E3S Web of Conferences, 2021
Four subgrid-scale models based on large eddy simulation (LES), such as Smagorinsky–Lilly (SL), dynamic Smagorinsky–Lilly (DSL), wall-adapting local eddy-viscosity (WALE), and dynamic kinetic-energy transport (KET) were used and couple Ffowcs Williams ...
Yang Chenghao, Feng Heying, Peng Yehui
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Artificial neural network-based subgrid-scale models for LES of compressible turbulent channel flow

Theoretical and Applied Mechanics Letters, 2023
Fully connected neural networks (FCNNs) have been developed for the closure of subgrid-scale (SGS) stress and SGS heat flux in large-eddy simulations of compressible turbulent channel flow.
Qingjia Meng, Zhou Jiang, Jianchun Wang
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Numerical Study of the Turbulent Flow from a Steam Dumping Pressurizer Relief Tank

Energies, 2020
Due to the complex geometry and turbulent flow characteristics, it is hard to simulate the process of steam dumping of the pressurizer relief tank (PRT).
Sen Zhang, Xiao-Wei Guo, Chao Li, Yi Liu, Ran Zhao, Canqun Yang   +5 more
doaj   +1 more source

Deep Learning for Subgrid‐Scale Turbulence Modeling in Large‐Eddy Simulations of the Convective Atmospheric Boundary Layer

Journal of Advances in Modeling Earth Systems, 2022
In large‐eddy simulations, subgrid‐scale (SGS) processes are parameterized as a function of filtered grid‐scale variables. First‐order, algebraic SGS models are based on the eddy‐viscosity assumption, which does not always hold for turbulence.
Yu Cheng, Marco G. Giometto, Pit Kauffmann, Ling Lin, Chen Cao, Cody Zupnick, Harold Li, Qi Li, Yu Huang, Ryan Abernathey, Pierre Gentine   +10 more
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Numerical Simulation Strategy Optimization Analysis of Submarine Resistance and Flow Field

Shanghai Jiaotong Daxue xuebao, 2022
In order to explore the influence of different turbulence models on the resistance and flow field of an advancing submarine, based on the STAR-CCM+platform, and taking Sub-off as the geometric model, this paper adopts the finite volume method, combing 10
LI Peng, WANG Chao, SUN Huawei, GUO Chunyu
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Large-eddy simulation of cultivated fields with Cyperus malaccensis Lam

Plant Production Science, 2023
In this study, the honami phenomenon in Cyperus malaccensis Lam. was reproduced to establish a simulation technique that can accurately reproduce the waves of it and predict the wind flow over it and through it, which is related to its growth.
Moe Shiraishi, Hiroaki Hayashi, Hiroaki Shimada, Shin-Ichi Satake   +3 more
doaj   +1 more source

Assessment of a Differential Subgrid Stress Model for Large-Eddy Simulations of Turbulent Unconfined Swirling Flames

Fire, 2023
Swirling flames are widely used in engineering to intensify mixing and stabilize combustion in gas turbine power plants and industrial burners. Swirling induces new instability modes, leading to intensification of coherent structures, asymmetric geometry,
Roman Balabanov, Lev Usov, Anton Nozdrachev, Alexei Troshin, Vladimir Vlasenko, Vladimir Sabelnikov   +5 more
doaj   +1 more source